Dulcolax (Bisacodyl) is a stimulant laxative that you can take by mouth or in a suppository. It causes waves of contractions (peristalsis) in your intestine muscles to push stool through. It also makes stool more watery.

Miralax (Polyethylene Glycol) is an osmotic laxative. It uses osmosis to keep more water in your intestine, which softens your stool and makes it easier to pass.